Since I've had BFS (since Nov. 2007), I would never get sick any more. I just posted this a couple of weeks ago when ImOk had a cold. My kids would pick up loads of viruses and pass them on to me before I had BFS. Then when my BFS symptoms started, I didn't get sick or catch anything any more. Last week, my daughter came home from school with a cold. When I woke up Monday morning, I was shocked to wake up with a cold (a full fledged one not just sniffles). And I have to say it feels good. I know that sounds absolutely absurd. But it feels like like my body is now doing what it should be doing. And my BFS symptoms are almost non-existent. I never thought I would be this happy to have a cold!